For PR797:
Make the Win32 code exception free (untested/uncompiled) which forced some
interface changes which had ripple effect. This should be the last of 797.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29884 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Unix/MappedFile.inc b/lib/System/Unix/MappedFile.inc
index ef959ba..4dccd13 100644
--- a/lib/System/Unix/MappedFile.inc
+++ b/lib/System/Unix/MappedFile.inc
@@ -122,7 +122,7 @@
return info_->Size;
}
-void MappedFile::size(size_t new_size) {
+bool MappedFile::size(size_t new_size, std::string* ErrMsg) {
assert(info_ && "MappedFile not initialized");
// Take the mapping out of memory
@@ -140,12 +140,14 @@
if (new_size > cur_size) {
// Ensure we can allocate at least the idodes necessary to handle the
// file size requested.
- ::lseek(info_->FD, new_size, SEEK_SET);
- ::write(info_->FD, "\0", 1);
+ if ((off_t)-1 == ::lseek(info_->FD, new_size, SEEK_SET))
+ return MakeErrMsg(ErrMsg, "Can't lseek: ");
+ if (-1 == ::write(info_->FD, "\0", 1))
+ return MakeErrMsg(ErrMsg, "Can't write: ");
}
// Put the mapping back into memory.
- this->map(0);
+ return this->map(ErrMsg);
}
}